scrapbox help needed urgent

Hello everone ,
I have recently purchased copy of scrape box , i am going through its documentation even with SEO dorks for finding forums ...but i am still learning..

I need to find 300 websites for link building with pr more than 6 , relevent to classifieds , cars , houses , Homes and furniture.

Help is appreciated , I was searching for blogengine blogs , after harvesting i got 300k domains , out of which 96% were duplicate and hence i had to remove them....so final i am getting about 10-20 domains...

can someone help me with dorks i should use or suggest anything that could help me.

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